We had a couple (maybe 5?) Dalmatian Mollies. The tank also has a pleco of some kind , a Golden Barb , and a phantom Tetra. The tank was here as we moved in. Owners seemed inexperienced. Some of the mollies wound up dead for some reason , with innards missing. I've made past posts about it , this was last year. Well all mollies died other than one. Other fish are fine. The one was pregnant. Had babies. Now the weird thing is , the babies gills look almost deformed. It could have been due to inbreding.. but their kills look too wide or big , and puffed out. Now the mother looks the same. And now very recently, the mothers bottom lip is stuck open. She's also swimming in weird patterns and hanging at the top. First thought is Ammonia poisoning or Gill mites , BUT the other fish arnt effected. Please help! Thanks.